Masoud Forouta, Hany M Elsheikha, Amir Karimipour-Saryazdi, Ali Dalir Ghaffari, Fatemeh Ghaffarifar, Hamidreza Majidiani
{"title":"刚地弓形虫状颈蛋白(TgRONs)对潜在免疫原性表位的计算机评价。","authors":"Masoud Forouta, Hany M Elsheikha, Amir Karimipour-Saryazdi, Ali Dalir Ghaffari, Fatemeh Ghaffarifar, Hamidreza Majidiani","doi":"10.17179/excli2025-8304","DOIUrl":null,"url":null,"abstract":"<p><p>This immunoinformatics-based study utilized a suite of online predictive tools to characterize the structural and immunogenic properties of <i>Toxoplasma gondii</i> rhoptry neck proteins (TgRONs). Full-length amino acid sequences of TgRON2, TgRON4, TgRON4L1, TgRON5, TgRON8, TgRON9, TgRON10, and TgRON13 were retrieved from ToxoDB and subjected to comprehensive analysis. Except for TgRON4L1, all proteins were predicted to be possess antigenic potential, with none identified as allergenic. Solubility predictions indicated that TgRON9 and TgRON10 are the most likely to be expressed as soluble antigens. Aliphatic index values, ranging from 51.17 to 84.63, suggest acceptable thermostability, while negative GRAVY scores across all proteins indicate favorable hydrophilicity. Additionally, multiple post-translational modification sites were identified, underscoring the functional complexity of these antigens. Initial 3D structure modeling showed that 60.21-92.41 % of residues fell within favored regions on Ramachandran plots, with refinement increasing this to 92.27-98.58 %, reflecting substantial improvements in structural quality. Several potential T-cell (CTL and HTL) and B-cell epitopes were predicted for all candidate proteins. Immune simulation models further suggested that these antigens could elicit robust humoral and cellular immune responses when delivered in a three-dose regimen at four-week intervals. These findings offer valuable preliminary insights and support the further investigation of TgRONs, particularly TgRON9 and TgRON10, as promising targets for experimental validation in the development of vaccines against <i>T. gondii</i> infection. See also the graphical abstract(Fig. 1).</p>","PeriodicalId":12247,"journal":{"name":"EXCLI Journal","volume":"24 ","pages":"749-773"},"PeriodicalIF":4.9000,"publicationDate":"2025-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12381366/pdf/","citationCount":"0","resultStr":"{\"title\":\"In silico evaluation of Toxoplasma gondii rhoptry neck proteins (TgRONs) for potential immunogenic epitopes.\",\"authors\":\"Masoud Forouta, Hany M Elsheikha, Amir Karimipour-Saryazdi, Ali Dalir Ghaffari, Fatemeh Ghaffarifar, Hamidreza Majidiani\",\"doi\":\"10.17179/excli2025-8304\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p><p>This immunoinformatics-based study utilized a suite of online predictive tools to characterize the structural and immunogenic properties of <i>Toxoplasma gondii</i> rhoptry neck proteins (TgRONs). Full-length amino acid sequences of TgRON2, TgRON4, TgRON4L1, TgRON5, TgRON8, TgRON9, TgRON10, and TgRON13 were retrieved from ToxoDB and subjected to comprehensive analysis. Except for TgRON4L1, all proteins were predicted to be possess antigenic potential, with none identified as allergenic. Solubility predictions indicated that TgRON9 and TgRON10 are the most likely to be expressed as soluble antigens. Aliphatic index values, ranging from 51.17 to 84.63, suggest acceptable thermostability, while negative GRAVY scores across all proteins indicate favorable hydrophilicity. Additionally, multiple post-translational modification sites were identified, underscoring the functional complexity of these antigens. Initial 3D structure modeling showed that 60.21-92.41 % of residues fell within favored regions on Ramachandran plots, with refinement increasing this to 92.27-98.58 %, reflecting substantial improvements in structural quality. Several potential T-cell (CTL and HTL) and B-cell epitopes were predicted for all candidate proteins. Immune simulation models further suggested that these antigens could elicit robust humoral and cellular immune responses when delivered in a three-dose regimen at four-week intervals. These findings offer valuable preliminary insights and support the further investigation of TgRONs, particularly TgRON9 and TgRON10, as promising targets for experimental validation in the development of vaccines against <i>T. gondii</i> infection. 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In silico evaluation of Toxoplasma gondii rhoptry neck proteins (TgRONs) for potential immunogenic epitopes.
This immunoinformatics-based study utilized a suite of online predictive tools to characterize the structural and immunogenic properties of Toxoplasma gondii rhoptry neck proteins (TgRONs). Full-length amino acid sequences of TgRON2, TgRON4, TgRON4L1, TgRON5, TgRON8, TgRON9, TgRON10, and TgRON13 were retrieved from ToxoDB and subjected to comprehensive analysis. Except for TgRON4L1, all proteins were predicted to be possess antigenic potential, with none identified as allergenic. Solubility predictions indicated that TgRON9 and TgRON10 are the most likely to be expressed as soluble antigens. Aliphatic index values, ranging from 51.17 to 84.63, suggest acceptable thermostability, while negative GRAVY scores across all proteins indicate favorable hydrophilicity. Additionally, multiple post-translational modification sites were identified, underscoring the functional complexity of these antigens. Initial 3D structure modeling showed that 60.21-92.41 % of residues fell within favored regions on Ramachandran plots, with refinement increasing this to 92.27-98.58 %, reflecting substantial improvements in structural quality. Several potential T-cell (CTL and HTL) and B-cell epitopes were predicted for all candidate proteins. Immune simulation models further suggested that these antigens could elicit robust humoral and cellular immune responses when delivered in a three-dose regimen at four-week intervals. These findings offer valuable preliminary insights and support the further investigation of TgRONs, particularly TgRON9 and TgRON10, as promising targets for experimental validation in the development of vaccines against T. gondii infection. See also the graphical abstract(Fig. 1).
期刊介绍:
EXCLI Journal publishes original research reports, authoritative reviews and case reports of experimental and clinical sciences.
The journal is particularly keen to keep a broad view of science and technology, and therefore welcomes papers which bridge disciplines and may not suit the narrow specialism of other journals. Although the general emphasis is on biological sciences, studies from the following fields are explicitly encouraged (alphabetical order):
aging research, behavioral sciences, biochemistry, cell biology, chemistry including analytical chemistry, clinical and preclinical studies, drug development, environmental health, ergonomics, forensic medicine, genetics, hepatology and gastroenterology, immunology, neurosciences, occupational medicine, oncology and cancer research, pharmacology, proteomics, psychiatric research, psychology, systems biology, toxicology